Just Like it Sounds

If you can say it, you can write it. A rule of thumb is to write out numbers just as they sound. If your number is 1,234, say it out loud. It will be written just as it sounds: One thousand two hundred thirty-four.

A Few Tips

Note the hyphen in “thirty-four” above. It is technically correct to hyphenate some numbers, but merchants don’t care when you’re writing a check.